Tension device for loom-shuttles.



No 721,978. PATENTED MAR. 3, 1903.

.J. E. TIGHON.

TENS ION DEVICE FOR LOOM SHUTTLES.

APPLIOAI'ION FILED JAN. 2 1902.

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1: nnmys wzrzns co PHOTD-LITHQ. WASHINGTON o c UNITED STATES PATENT OFFICE.

JOSEPH E. TICHON, OF NEW BEDFORD, MASSACHUSETTS, ASSIGNOR TO JOHN V. OUNNIFF, EDWARD CUNNIFF, AND FREDERIG W. REYNOLDS, OF NEW BEDFORD, MASSACHUSETTS.

TENSION DEVICE FOR LOOM-SHUTTLES.

SPECIFICATION forming part of Letters Patent No. 721,978, dated March 3, 1903.

Application filed January 2, 1902. Serial No. 88,154. (No model.)

To a whom it may concern: indicating in broken lines the position of the 50 Be it known that I, JOSEPH E. TIOHON, a citiweft-thread as it enters the spiral of the tenzen of the United States, residing at New Bedsion device. Fig. 4 is a transverse sectional ford, in the county of Bristol and State of Masview of the shuttle, showing the spiral guide sachusetts, have invented a new and ,useful of the tension'device. Fig. 5 is a perspective Improvement in Tension Devices for Loom- VlGW' of the tension device. 55 Shuttles, of which the following is a specifi- Similar marks of reference indicate correcation. spending parts in all the figures.

In weaving cloth it is essential that the In thedrawings, A indicates the delivery weft or filling threads be laid straight across end of. the shuttle; B, the quill end of the the warp-shed. To secure this, sufficient fricbobbin; B, the weft-thread carried on the 60 tional resistance to the delivery of the fillingbobbin, and b the weft or filling thread dethread from the shuttle is required. In the livered from the bobbin. older forms of shuttles this frictional resist- The tension device 0 consists of the wire ance was secured by the passage of the fill: rod 0, the forward end 0 of which is bent ing-thread through the shuttle-eye. Su'ch anddoubledon itself. Thewireisnow wound 6 frictional resistance does not control the to form the spiral 0 the plane of which is at drawing off of the filling from the cop or bobright angles to the axis of the rod 0. The bin in the shuttle and allows of the balloonspiral is sufficiently open to allow the pas- 2o ing ofthe thread,which is liable to cause kinksage of the weft-thread. After bending the ing and breaking of the weft-thread. In selfwire to form two turns the wire is bent into 70 threading shuttles, particularly when used in the larger curve 0 forming the guide to the magazine-looms, the delivery of the thread is entrance and then the wire is bent sharply not controlled by frictional resistance on the to form the end 0 which is secured in the first throw of the shuttle. Theimproved tenside of the shuttle. I have shown the wire sion device when applied to the class of selfrod a secured to the head of the shuttle by 75 threading shuttles shown and described in means of the clamp-plates d, but do not wish United States Patent to James H. Northrop, to confine myself to the use of these clamp- No. 568,207, of September 22,- 1896, for implates. I

provement in self-threading loom-shuttles, In illustrating my invention I have not will control the frictional tension of the fillshown the usual thread-eye on the delivery 80 ing-thread at every throw of the shuttle. end of the shuttle or other means for guiding The object of theinvention is to provide an the weft-thread, as is usual, to one side of automatic threading tension device for lOOIIlthe shuttle. My frictional tension device may shuttles; and to this end the invention conbe used in connection with any form of guidesists in the peculiar and novel construction of eye or any form of self-threading device now 85 the device more fully described hereinafter. used. In the preferred form, as shown in the Figure l is a top View of part of a loom,- drawings, 1 locate the end 0 of the tension deshuttle and part of a bobbin, showing the vice on a line with the axis of the bobbin, forweft-thread entering the improved tension ward of but near the end ofthe bobbin, so that device as the shuttle is thrown in the directhe weft-thread as it is drawn from the end 90 tion indicated by the arrow. Fig. 2 is the of the bobbin passes in the shape of acone to same view of part of the shuttle and part of the opening in the spiral, the said opening the bobbin as Fig. 1, but shows the weftforming the apex of a cone, of which the end thread in its passage around the stem of the of the bobbin forms the base. By this artension device. Fig. 3 is a longitudinal secrangement the weft-thread is drawn against 5 tional view of part of the shuttle, showing the bobbin and around the end of the bobbin the weft-thread extending from the bobbin in frictional contact with the thread on the through the tension device in solid lines and full fresh bobbin, and when part of the thread has been delivered the Weft-thread is delivered while in frictional contact with the exposed end of the bobbin, as shown in the drawings. Ballooning of the weft-thread, which is the main cause of the kinking of the weft so very objectionable in the finer qualities of cloth, is prevented by my tension device. The frictional contact of the weft-th read with the bobbin secures an amount of frictional resistance and tension on the weft as it is delivered not possible with the frictional devices heretofore used on loom-shuttles. A loomshuttle provided with my tension device will on the first throw cause the weft-thread to pass around the end of the shuttle and guide the Weft into the entrance 0 and around the two turns of the spiral o at the same time winding the weft-thread spirally around the wire rod 0. The delivery of the weft is at the first throw of the shuttle and all subsequent throws controlled by the frictional resistance of the thread on the bobbin and on the wire rod 0 of the tension device.

Having thus described my invention, I claim as new and desire to secure by Letters Patent- 1. The combination with the head of the shuttle and the bobbin in the same, of the rod 0, the end 0 of the same, the spiral c wound to form the entrance 0 and at right angles to the plane of the rod 0 and means for securing the tension device 0 in the shuttle, as described.

2. A tension device for loom-shuttles, consisting of a wire rod the forward end of which is bent and doubled on itself and then wound to form a spiral, the plane of which is at right angles to the axis of the rod, as described.

3. The combination with the head of a shuttle and the bobbin in the same, of a tension device consisting of a wire rod 0 the forward end 0 of which is bent and doubled on itself and then wound to form the spiral a, the plane of which is at right angles to the axis of the rod 0, then bent to form the larger curve as at c and the end 0 and means for securing the same, as described.

4. A tension device for loom-shuttles, consisting of a rod the forward end of which is Wound at right angles to the plane of the rod to form a spiral with an enlarged entrance, and means for securing the rod in the shuttle, as described.

In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

JOSEPH E. TICIION.

Witnesses:

J. A. MILLER, Jr., ADA E. HAGERTY. 

